LOCATION URICH MO
Established Series
Rev. KDV
09/2012
URICH SERIES
The Urich series consists of deep, poorly drained, slowly permeable soils formed in alluvium. These soils are on stream terraces, and slopes range from 0 to 2 percent. Mean annual temperature is 59 degrees F, and mean annual precipitation is 38 inches.
TAXONOMIC CLASS: Fine-silty, mixed, active, thermic Typic Argiaquolls
TYPICAL PEDON: Urich silt loam - cultivated. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; very dark grayish brown (10YR 3/2) silt loam; grayish brown (10YR 5/2) dry; weak fine granular structure; friable; few fine roots; few iron stains; slightly acid; abrupt smooth boundary. (5 to 10 inches thick)
AB--7 to 10 inches; very dark grayish brown (10YR 3/2) silt loam; grayish brown (10YR 5/2) dry; few fine prominent dark brown (7.5YR 4/4) mottles; weak fine subangular blocky structure; friable; few fine roots; few fine concretions (oxides); slightly acid; clear smooth boundary. (0 to 6 inches thick)
Btg1--10 to 14 inches; dark gray (10YR 4/1) silty clay loam; few fine prominent strong brown (7.5YR 4/6) mottles; weak fine subangular blocky structure; friable; few fine roots; few faint clay films on faces of peds; few fine concretions (oxides); slightly acid; clear smooth boundary.
Btg2--14 to 24 inches; dark gray (10YR 4/1) silty clay loam; few fine prominent strong brown (7.5 4/6) mottles; weak fine prismatic structure parting to weak fine subangular blocky; friable; few fine roots; few faint clay films on faces of peds; few fine concretions (oxides); medium acid; gradual smooth boundary.
Btg3--24 to 54 inches; dark gray (10YR 4/1) silty clay loam; common medium prominent strong brown (7.5YR 4/6) and common medium distinct dark brown (10YR 4/3) mottles; weak fine subangular blocky structure; firm; few fine roots; common distinct clay films on faces of peds; common fine concretions (oxides); medium acid; gradual smooth boundary.
Btg4--54 to 60 inches; dark gray (10YR 4/1) silty clay loam; common very dark gray (10YR 3/1) streaks; common medium prominent strong brown (7.5YR 4/6) mottles; weak fine subangular blocky structure; firm; few fine roots; common prominent clay films on faces of peds; few fine concretions (oxides); strongly acid.
TYPE LOCATION: Henry County, Missouri; 1/2 mile south of Urich; 1590 feet south and 1300 feet west of northeast corner, sec. 10, T. 42 N., R. 28 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 36 to 60 or more inches. The mollic epipedon commonly is 10 to 20 inches thick, but may range to 24 inches. It is strongly acid to slightly acid.
The A horizon has value of 2 or 3 and chroma of 1 or 2.
The Btg horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 2 or less. The upper subhorizon may have value of 3. The upper 20 inches of the argillic horizon averages 27 to 35 percent clay.
COMPETING SERIES: These include the
Andry,
Jeanerette, and
Morey series of the same family and the
Muldrow and
Quarles series. Andry soils have surface layers of hemic materials and exchangeable sodium percentages of 8 percent or more. Jeanerette soils contain free carbonates and are less acid. Morey soils have warmer climate and more rainfall. Muldrow and Quarles soils have more clay in the argillic horizon.
GEOGRAPHIC SETTING: Urich soils are on stream terraces. They formed in silty alluvium. Slopes range from 0 to 2 percent. Mean annual temperature ranges from 58 to 60 degrees F, and mean annual precipitation ranges from 36 to 40 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing
Muldrow and
Quarles soils and the
Lightning,
Osage, and
Verdigris soils. Lightning soils do not have a mollic epipedon. Osage soils have more clay. Verdigris soils have higher chroma. All of these soils are on similar positions or lower and closer to the main drainage.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is slow. Permeability is slow.
USE AND VEGETATION: Most areas are cultivated. Native vegetation is tall prairie grasses.
DISTRIBUTION AND EXTENT: West-central Missouri. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Henry County, Missouri, 1972.
REMARKS: The type location was changed because the original site has been permanently covered with water.
Diagnostic horizons and features recognized in this series are: mollic epipedon - the zone from the surface to a depth of 10 inches; argillic horizon - the zone from approximately 10 inches to 60 inches or more; aquic moisture regime.
National Cooperative Soil Survey
U.S.A.